We demonstrate few-cycle pulse generation based on double-stage all-fiber nonlinear pulse compression from a thulium-doped fiber laser at a repetition rate of∼199.74 MHz.The homemade laser provides an average power o...We demonstrate few-cycle pulse generation based on double-stage all-fiber nonlinear pulse compression from a thulium-doped fiber laser at a repetition rate of∼199.74 MHz.The homemade laser provides an average power of 130 mW,serving as the seed for subsequent amplification.After amplification,significant spectral broadening to an octave-spanning bandwidth(1.2 to 2.4μm)is attained through self-phase modulation-dominated nonlinear effects in an ultrahigh numerical aperture fiber and a highly nonlinear fiber.Followed by a two-stage nonlinear compressor,the system directly delivers near transform-limited pulses with a pulse duration of 19.8 fs(2.9 cycles at a central wavelength of 2000 nm)and a pulse energy of 3.37 nJ.To the best of our knowledge,this result is the shortest pulse duration directly generated from a thulium-doped fiber laser.This robust and simplified all-fiber system provides a promising route toward practical mid-infrared frequency comb generation and mid-infrared spectroscopy.展开更多
Pharmacy clinics,staffed by clinical pharmacists who interact directly with patients,encompass services such as medication reconciliation,education,follow-up visits,and lifestyle guidance.Their primary goal is to enha...Pharmacy clinics,staffed by clinical pharmacists who interact directly with patients,encompass services such as medication reconciliation,education,follow-up visits,and lifestyle guidance.Their primary goal is to enhance patients’quality of life.Numerous studies,both domestic and international,have highlighted the benefits of pharmacy clinics in optimizing drug therapy quality and reducing treatment costs,particularly for long-term medication management in organ transplant recipients and similar patient groups.Despite these benefits,pharmacy clinics are still in the early stages of development in China.There remains a lack of clarity regarding the specific development and service content of pharmacy clinics tailored for transplant patients.Therefore,this study aimed to assess the current status of pharmacy clinic development for transplant patients in China and provide insights to hospitals for advancing and strengthening transplant pharmacy clinic initiatives.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.62227821 and 42461050)the Key Project of the National Institute of Metrology,China(Grant Nos.AKYZD2411 and AKYZD2511-2).
文摘We demonstrate few-cycle pulse generation based on double-stage all-fiber nonlinear pulse compression from a thulium-doped fiber laser at a repetition rate of∼199.74 MHz.The homemade laser provides an average power of 130 mW,serving as the seed for subsequent amplification.After amplification,significant spectral broadening to an octave-spanning bandwidth(1.2 to 2.4μm)is attained through self-phase modulation-dominated nonlinear effects in an ultrahigh numerical aperture fiber and a highly nonlinear fiber.Followed by a two-stage nonlinear compressor,the system directly delivers near transform-limited pulses with a pulse duration of 19.8 fs(2.9 cycles at a central wavelength of 2000 nm)and a pulse energy of 3.37 nJ.To the best of our knowledge,this result is the shortest pulse duration directly generated from a thulium-doped fiber laser.This robust and simplified all-fiber system provides a promising route toward practical mid-infrared frequency comb generation and mid-infrared spectroscopy.
文摘Pharmacy clinics,staffed by clinical pharmacists who interact directly with patients,encompass services such as medication reconciliation,education,follow-up visits,and lifestyle guidance.Their primary goal is to enhance patients’quality of life.Numerous studies,both domestic and international,have highlighted the benefits of pharmacy clinics in optimizing drug therapy quality and reducing treatment costs,particularly for long-term medication management in organ transplant recipients and similar patient groups.Despite these benefits,pharmacy clinics are still in the early stages of development in China.There remains a lack of clarity regarding the specific development and service content of pharmacy clinics tailored for transplant patients.Therefore,this study aimed to assess the current status of pharmacy clinic development for transplant patients in China and provide insights to hospitals for advancing and strengthening transplant pharmacy clinic initiatives.
